Stopwatch Resolution Simulation for Mobile CPU Load Reduction
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Solution Overview
Problem
The high processor intensity of updating a stopwatch on mobile devices, particularly when displaying precise time, leads to significant CPU consumption and battery drain.
Innovation Solution
A method that simulates a given resolution for a stopwatch by replacing the true elapsed time's second digit with a non-true number, reducing the frequency of updates to the display screen, thereby alleviating CPU load and conserving battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the stopwatch updates the display screen with true elapsed time at high resolution (including second digit), then the measurement precision is improved, but the CPU consumption increases significantly
Solution Approach 1:
The patent creates a visual copy or simulation of high-precision stopwatch display by rendering the second digit without actually updating it with true elapsed time values. The display shows what appears to be high-resolution time measurement, but uses a simplified updating mechanism that updates less frequently, thereby reducing CPU consumption while maintaining the appearance of high precision measurement.
2Measurement precision
If the stopwatch updates the display screen frequently to maintain high precision display, then the measurement precision is improved, but the battery consumption increases
Solution Approach 1:
The patent implements periodic action by updating the second digit of the stopwatch display less frequently than the first digit. While the first digit updates continuously to show true elapsed time, the second digit is updated at reduced intervals or simulated through rendering techniques, creating a periodic rather than continuous update cycle that conserves battery energy.
3Measurement precision
If the stopwatch displays true elapsed time with high resolution, then the measurement precision is improved, but the processor intensity increases
Solution Approach 1:
The patent uses copying by rendering a visual representation of high-precision time display without performing actual high-precision time measurements and updates. The second digit is displayed as if it were updating with true elapsed time, but the processor only performs simplified update operations at lower frequency, reducing computational intensity while maintaining the visual appearance of high measurement precision.
Data Source
AI summary
There is described a mobile device comprising a display screen for displaying an image of a clock having a resolution of at least a first digit representing a tenth of a second and a second digit representing a hundredth of a second; and a processor having an internal clock, the processor adapted to update at least the first digit of the image of the clock on the display screen with true elapsed time, and to update the second digit with a non-true number.